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公开(公告)号：US20180102139A1
公开(公告)日：2018-04-12
申请号：US15427643
申请日：2017-02-08
Inventor： Harumitsu MIYASHITA , Yasumori HINO , Junichi MINAMINO , Tsutomu KAI
CPC classification number: G11B20/1816 , G11B7/0037 , G11B7/00375 , G11B7/0948 , G11B19/041 , G11B20/10314 , G11B20/18
Abstract: An inspection method for a recordable optical disc includes focusing laser light on a recording layer and obtaining a data signal dependent on the laser light reflected by the recording layer. The inspection method also includes determining whether the optical disc includes a defect or not by identifying a first period every second period in the obtained data signal obtained, the first period being a period in which a signal level of the data signal is lower than a predetermined value, and each of the second periods corresponding to an ECC block, and outputting a result of the determination.
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2.发明申请公开(公告)号：US20160275981A1
公开(公告)日：2016-09-22
申请号：US15166112
申请日：2016-05-26
Inventor： Isao KOBAYASHI , Kohei NAKATA , Yasumori HINO
IPC: G11B7/0045 , G11B20/10
CPC classification number: G11B7/00456 , G11B7/0045 , G11B7/0062 , G11B7/1263 , G11B7/1267 , G11B20/10009 , G11B20/10037 , G11B20/10194
Abstract: An information recording and reproducing apparatus including: a reproducing unit which generates a digital signal from an analog signal; a recording compensation unit which generates an expectation signal from the digital signal, detects a signal difference between the digital signal and the expectation signal, and adjusts a recording condition for recording the information; and a recording unit configured to record the information based on the recording condition. First recording compensation is performed for adjusting the recording condition using first recording where lengths of a preceding space and a succeeding space of a first recording mark and lengths of a preceding space and a succeeding space of a second recording mark are not in intersymbol interference; and second recording compensation is performed for adjusting the recording condition for the first recording mark using second recording data for changing a length of the second recording mark.
Abstract translation: 一种信息记录和再现装置，包括：再现单元，其从模拟信号产生数字信号; 从数字信号产生预期信号的记录补偿单元检测数字信号与期望信号之间的信号差，并调整用于记录信息的记录条件; 以及记录单元，被配置为基于记录条件记录信息。 执行第一记录补偿，以使用第一记录来调整记录条件，其中第一记录标记的前一个空间和后续空间的长度以及前一个空间的长度和第二个记录标记的后续空间的长度不在符号间干扰; 并且执行第二记录补偿，以使用用于改变第二记录标记的长度的第二记录数据来调整用于第一记录标记的记录条件。
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3.发明申请公开(公告)号：US20160293200A1
公开(公告)日：2016-10-06
申请号：US14666488
申请日：2014-08-20
Inventor： Kohei NAKATA , Yasumori HINO , Harumitsu MIYASHITA , Junichi MINAMINO , Yoshihisa TAKAHASHI
IPC: G11B7/005 , G11B7/2407 , G11B20/12 , G11B7/0045
CPC classification number: G11B7/0053 , G11B7/0037 , G11B7/0045 , G11B7/00718 , G11B7/00736 , G11B7/0079 , G11B7/2407 , G11B7/24082 , G11B20/1217 , G11B20/1252 , G11B2007/00754 , G11B2020/1242 , G11B2020/1268 , G11B2020/1277 , G11B2020/1294
Abstract: A track of an optical disk is formed by wobbling and divided into zones, a clock ratio of a recording clock to a wobble clock is preset for each zone, a wobble signal is detected from the optical disk, the wobble clock is generated from the wobble signal, a present position is identified by reproducing ADIP indicating a position of the track from the wobble signal and the wobble clock, the recording clock is generated with respect to the wobble clock, a data address present position is identified from the present position, a start end position of the ADIP in a recording target zone, a start end position of the data address in the recording target zone, and the clock ratio, a recording start position is identified based on the data address present position; and the data is recorded from the recording start position of the recording target zone.
Abstract translation: 通过摆动形成光盘的轨道并将其划分为区域，为每个区域预设记录时钟与摆动时钟的时钟比，从光盘检测摆动信号，从摆动产生摆动时钟 信号，通过从摆动信号和摆动时钟再现指示轨道的位置的ADIP来识别当前位置，相对于摆动时钟产生记录时钟，从当前位置识别数据地址存在位置， 记录目标区域中的ADIP的开始结束位置，记录目标区域中的数据地址的开始结束位置和时钟比，基于数据地址存在位置来识别记录开始位置; 并且从记录目标区域的记录开始位置记录数据。
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Patent Agency Ranking
公开(公告)号：US20160284380A1
公开(公告)日：2016-09-29
申请号：US15172579
申请日：2016-06-03
Inventor： Kohei NAKATA , Yasumori HINO
CPC classification number: G11B20/10222 , G11B7/0037 , G11B7/005 , G11B20/10009 , G11B20/10037 , G11B20/10046 , G11B20/14
Abstract: An optical disc apparatus includes a synchronizer that generates a reproduction clock signal synchronized with a reproduction signal of information recorded in an optical disc medium, and generates a digital reproduction signal synchronized with the reproduction clock signal, an adaptive equalizer that generates a post-adaptive-equalization digital reproduction signal, and a maximum likelihood decoder that performs maximum likelihood decoding of the post-adaptive-equalization digital reproduction signal to generate a binary signal. The apparatus also includes an expected waveform generator that generates an expected waveform from the binary signal, a phase-advance waveform generator that generates a phase-advance waveform, a phase-delay waveform generator that generates a phase-delay waveform, and a metric detector that detects a phase error. In the optical disc apparatus, the synchronizer controls the phase of the digital reproduction signal using the phase error.
Abstract translation: 光盘装置包括产生与记录在光盘介质中的信息的再现信号同步的再现时钟信号的同步器，并产生与再现时钟信号同步的数字再现信号，自适应均衡器， 均衡数字再现信号，以及执行后自适应均衡数字再现信号的最大似然解码以产生二进制信号的最大似然解码器。 该装置还包括从二进制信号产生预期波形的预期波形发生器，产生相位提前波形的相位推进波形发生器，产生相位延迟波形的相位延迟波形发生器，以及度量检测器 它检测相位误差。 在光盘装置中，同步器使用相位误差来控制数字再现信号的相位。
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公开(公告)号：US20220013144A1
公开(公告)日：2022-01-13
申请号：US17487303
申请日：2021-09-28
Inventor： Yasushi KOBAYASHI , Kohei NAKATA , Yasumori HINO
IPC: G11B20/10 , G11B7/0045
Abstract: A recording mark is formed on a recording medium by a predetermined recording signal, a playback signal of the recording mark formed on the recording medium is obtained, and an expected value signal of the playback signal based on the recording signal is generated. Based on an amplitude error between the playback signal and the expected value signal, and for each predetermined unit of the recording signal, a deviation amount of a mark shape of the recording mark from which the playback signal is obtained with respect to a mark shape of an ideal recording mark is calculated, and a mark shape of the recording mark formed on the recording medium is estimated. Based on the deviation amount of the mark shape of the recording mark, a correction amount is calculated for each predetermined unit of the recording signal, and a level of the recording signal is adjusted.
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公开(公告)号：US20190279680A1
公开(公告)日：2019-09-12
申请号：US16293735
申请日：2019-03-06
Inventor： Tsuyoshi NAKASENDO , Yasumori HINO , Kohei NAKATA
Abstract: A data coding device includes an error correction coder that converts user data into ECC data by error correction coding, a modulation coder that converts the ECC data into a series of modulated code data, a detector that detects a local concentration of modulation marks/modulation spaces that are shorter than or equal to a prescribed minimum run-length plus N from the series of modulated code data, a conversion determiner that judges whether to convert the series of modulated code data into another series of modulated code data, according to a concentration, detected by the detector, of the modulation marks/modulation spaces, and a modulation data converter that converts the series of modulated code data into the another series of modulated code data.
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7.发明申请公开(公告)号：US20170206923A1
公开(公告)日：2017-07-20
申请号：US15475693
申请日：2017-03-31
Inventor： Yoshihisa TAKAHASHI , Akihito YOSHIMI , Kenji TAKAUCHI , Yasumori HINO , Motoshi ITO
IPC: G11B7/0037 , G11B20/12 , G11B7/007
CPC classification number: G11B20/1217 , G11B7/00375 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B7/00718 , G11B7/00745 , G11B20/10 , G11B20/1889 , G11B27/329 , G11B2020/1238
Abstract: An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.
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8.发明申请INFORMATION RECORDING METHOD, INFORMATION RECORDING DEVICE, AND INFORMATION RECORDING MEDIUM 审中-公开信息记录方法，信息记录装置和信息记录介质公开(公告)号：US20170040033A1
公开(公告)日：2017-02-09
申请号：US15298627
申请日：2016-10-20
Inventor： Yoshihisa TAKAHASHI , Akihito YOSHIMI , Kenji TAKAUCHI , Yasumori HINO , Motoshi ITO
IPC: G11B20/12 , G11B7/007 , G11B7/0045
CPC classification number: G11B20/1217 , G11B7/00375 , G11B7/004 , G11B7/0045 , G11B7/007 , G11B7/00718 , G11B7/00745 , G11B20/10 , G11B20/1889 , G11B27/329 , G11B2020/1238
Abstract: An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.
Abstract translation: 本公开的信息记录方法是一种信息记录方法，用于在包括一个或多个记录层的一次写入信息记录介质上记录信息，每个记录层是螺旋形的，在该记录层上，槽脊轨道和槽道 作为记录轨道交替地重复，每个记录轨道被分成块，每个块是进行记录的最小单位。 信息记录方法包括：以每个块为单位将信息记录在信息记录介质上; 并控制在信息记录介质上的记录。 在控制步骤中，根据要被记录的块的两面相邻的记录轨道的记录条件，执行切换是否在要记录的信息的块中进行记录。
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